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No. 610,729. Patented Sept. I3, I898. J. F. WINCHELL.

GRINDING MILL.

(Application filed June 4, 1897.) (No Modem 2 Sheets8heet i.

No. s|0,729,

Patented Sept. I3, I898. .1; F. WINGHELL.

GRINDING MILL.

(Application filed June 4, 1897.)

2 Sheets-Sheet 2.

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JAMES F. WVINOHELL, OF SPRINGFIELD, OHIO, ASSIGNOR TO THE FOOSMANUFACTURING COMPANY, OF SAME PLACE.

GRlNDlNG-MILL.

SPECIFICATION forming part of Letters Patent No. 610,729, datedSeptember 13, 1898. Application filed June 4,1897. Serial No. 639,380.(No model.)

To all whom it may concern:

Be it known that I, J AMES F. WINoHELL, a citizen of the United States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and use ful Improvements in Grinding-Mills, ofwhich the following is a specification, reference being had therein tothe accompanying drawmgs.

This invention relates to certain new and useful improvements inquick-releasin g mechanism for grinding-mill shafts, so that thegrinding-heads may be quickly separated and adjusted together.

My invention is particularly designed for and adapted to thevertical-disk type of grinding-mills being manufactured and sold by myassignee of this invention, the Foos Manufacturing Company, though itmay be used with other grinding-mills.

It consists, essentially, of a double bellcrank lever connected by linkswith a cross head adapted to slide to and from the grinding-head shaftand carrying the temper-screw for giving slight adjustment to suchshaft, whereby when such lever is operated it will adjust the cross-headand with it the temperscrew to and from the grinding-shaft in a mannerto permit the shaft to shift longitudinally and quickly in one directionand in a manner to quickly adjust the shaft in the other direction.

In the accompanying drawings, on which like reference-letters indicatecorresponding parts, Figure 1 is a perspective view of so much of onetype of grinding-mill now being put on the market by my said assignee asis necessary to show the adaptation and arrangement of myquick-adjusting mechanism. Fig. 2 is a side elevation of a portion ofsuch mill and of my mechanism; Fig. 3, a plan view of what is shown inFig. 2; Fig. 4, a detail perspective view of the bell-crank lever withits links; Fig. 5, an enlarged detail side elevation with parts brokenaway; and Fig 6, a similar view to Fig. 5, showing the cross-head movedoutward by the quick-release mechanism.

The letter A designates the base of such a mill, upon which is mounted acasing B for the grinding-heads, with a feed-hopper O. 011

the base are also mounted bearing-standards D and E, these standardssupporting suitable bearings F and G for the shaft H. This shaft carriesa grinding-head I, armed with suitable grinding-plates J. A pulley K isutilized to drive this shaft and grinding head by means of a belt. Asimilar grinding-head L, with grinding-plates M, is mounted in juXtaposition to the grinding-head I on a shaft 0, mounted also in suitablebearings. One of these heads is to be adjusted to and from the other bytwo classes of adjustments. One class is quick, and hence I term myimprovements quick-adjusting mechanism. The other class of adjustmentsis slow, being effected by temper-screw. I have illustrated a mill inwhich both of the heads rotate but it is obvious that if but one headrotated and the other was stationary my improvements would be equallyapplicable. I have shown it applied to one of the heads as illustratedin the drawings-namely, the head I. The shaft H of this head extendsinto the bearing G. and has placed against its end a plate P, withantifriction-balls Q, between it and a plate R. The temper-screw S bearsagainst the plate R, and through it and the balls and plate P adjuststhe shaft inward to bring the head I in proper relation to the head L,according to the degree of coarseness or fineness it is desired to grindthe material, as corn. So far I have described nothing new.

I will now refer to my mechanism proper. A yoke T carries thetemper-screw S and is mounted upon pins U, extending from the end of thebearing G. To each end of the yoke are pivoted links V, while theselinks at their other ends are pivoted to the arms W of the doublebell-crank lever X, having studs at Y, which are pivoted in brackets Z,extending from the standard E and having caps a, whichikeep thetrunnions in place. Now it will be seen that in order to quickly releasethe head I and its shaft II it is only necessary to take hold of thelever X and move it in the direction of the arrow, as shown. This willslide the cross-head T on its pins U away from the shaft and release thetemper screw S from the plate R. Thus the shaft can shift longitudinallyin that direction. It tends so by the pressure of the material be* tweenits head and the other head, and when so shifted it moves the plates Pand R, together with the balls between them, Without separating saidplates. To return the shaft to normal position, as it may be termed, thelever X is returned to normal position. It will be understood, ofcourse, that the pivot 22 between the lever and the links and the pivota between the links and the crosshead are slightly out of line with thetrunnions Y when the lever X is in normal or holding position. Stopsformed by lugs 61 project inward from the brackets Z and limit thedownward movement of the arms W of the lever X. Thus it will be seenthat I have provided a quick-releasing mechanism which, besides quicklypermitting or freeing the shaft in one direction, will yet hold theshaft against shifting from its place of adjustment by the temper-screwand will return the shaft to normal position after permitting it to bequickly released.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. In a grinding-mill quick-releasing mechanism, the combination with agrinding-head and its shaft, of a slidable cross-head carrying a deviceto control the shaft, a hand-lever adapted to be quickly operated andlinks connecting said lever and said cross-head whereby when the leveris operated the cross-head will be adjusted with respect to thegrindingshaft.

2. In a grinding-mill quick-releasing mechanism, the combination with agrinding-head and its shaft, of a slidable cross-head carrying atemper-screw adapted to adjust and control such shaft, a double-armedlever pivoted near the cross-head and links connecting the arms of saidlever with the cross-head whereby when the lever is operated thecrosshead will be adjusted with respect to the grinding-shaft.

3. In a quick-releasing mechanism for grinding-mills, the combinationwith its head and shaft, of a slidable cross-head, a temperscrew carriedthereby, a double-armed bellcrank lever, pivoted near the cross-head,and links connecting the lever-arms with the cross head, the normalposition of the lever bringing the centers of the link-pivots out ofline with the centers of the lever-pivots.

4. In a quick releasing mechanism for grinding-mills, the combinationwith a grinding-head, its shaft and bearings, of pins eX- tending fromone of the bearings, and brackets extending from one of thebearing-standards, a slidable cross-head on the pins and stops on thebrackets, a double-armed cranklever pivoted in the brackets and limitedby said stops, links pivoted to said arms and to the cross-head, and atemper-screw carried by the cross-head and adapted to adjust said shaft.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES F. NINCHELL.

Witnesses:

' O. W. BOOOCK,

A. O. ALLEN.

